The correct answer is C.Use quotation marks at the beginnings of all paragraphs, and at the end of the last paragraph only.
That is done so as to show when new paragraphs and thoughts begin. It is not necessary to close them all down as you can only close the last one down and it is enough.
As you get data from experiments so you get knowledge from research
The correct answer should be A. Each
That is because "each" is used here to show that every single flower was used, which in turn means it's an adjective that describes what the flowers are like, that is, manner and and quantity.
